def kyuu(N):
  for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break

X = int(input())
print(kyuu(X)) def kyuu(N):
  for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break kyuu for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break i range(8) range 8 if N >= 1800 - 200 * i:
      return (i + 1)
      break N >= 1800 - 200 * i N 1800 - 200 * i 1800 200 * i 200 i return (i + 1) i + 1 i 1 break N N X = int(input()) X int(input()) int input() input print(kyuu(X)) print kyuu(X) kyuu X def kyuu(N):
  for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break def kyuu(N):
  for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break kyuu X = int(input()) int(input()) X
def kyuu(N):
  for i in range(8):
    if N >= 1800 - 200 * i:
      return (i + 1)
      break

X = int(input())
print(kyuu(X))